Description
Countersink with 3-flutes, 90° chamfering angle, maximum diameter 20.50mm with an overall length of 164mm and a head length of 12.9mm and 10mm straight extended shank, according to DORMER standard to produce a conical seat for ISO Metric countersunk-head screws with a minium hole diameter of 3.00mm, HSS with standard bright finish for machining free machining, plain carbon and alloy steel
